A week back I went to one my friends home. He was chatting with his college mate. His college mate was teasing him by login into Yahoo Messenger with his three different IDs at the same time. My friend was confused. Then I showed him how his college mate was able to do that. You can do it too, by Playing a little bit with Windows Registry.

Here's what you've got to do:

1. Go to Start ----> Run . Type regedit, then enter.2. Navigate to HKEY_CURRENT_ USER --------> Software --->yahoo ----->pager---->Test3. On the right page , right-click and choose new Dword value .4. Rename it as Plural.5. Double click and assign a decimal value of 1.

Its done!!

Now open Yahoo Messenger and login with your ID. Once you're logged in, again open Yahoo Messenger. This time it won't show you the one you previously logged in[as earlier], instead, it'll open another blank Yahoo Messenger where in, you can login with you another Yahoo Messenger ID. This way, you can login to Yahoo Messenger with multiple IDs. By the way, you must own all those IDs you wish to login.